I just wondered if anybody had any info/experience with campaigns that you have turned off....for instance - I am sort of cross testing by running a single campaign on a single day - or for a week. But, I know there are so many systems that adwords runs on - is there a 'lag' factor, for instance, I turn off adwords at 10pm on monday - are those ads still showing on some parts of the system tuesday morning? Just wondering...tks
I go on 3 hours before every server gets the message and changes are propagated throughout the system. No particular reason I use that figure except that Google says data is not real-time and may be up to 3 hours behind. Only makes sense it would be about the same when you make changes to a campaign. Note that it may be a longer period as there could be delays but 3 hours or less is about right.
I've never noticed a lag although as Lucid says it may be wise to allow for one as per Google's statement regarding data not being real-time. That said, you would not be charged for any clicks that came in after you switched your campaign off, so there's no financial exposure there.